20379556800 has 168 divisors, whose sum is σ = 74291190000. Its totient is φ = 5434536960.

The previous prime is 20379556789. The next prime is 20379556817. The reversal of 20379556800 is 865597302.

It is a happy number.

20379556800 is a `hidden beast` number, since 20 + 3 + 79 + 556 + 8 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192675 + ... + 279074.

Almost surely, 2^20379556800 is an apocalyptic number.

20379556800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20379556800 is an abundant number, since it is smaller than the sum of its proper divisors (53911633200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20379556800 is a wasteful number, since it uses less digits than its factorization.

20379556800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471780 (or 471759 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 20379556800 in words is "twenty billion, three hundred seventy-nine million, five hundred fifty-six thousand, eight hundred".